could chink
Regular verb: chink - chinked- chinked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could chink
you could chink
she could chink
we could chink
you could chink
they could chink 	I could be chinking
you could be chinking
she could be chinking
we could be chinking
you could be chinking
they could be chinking	I could have chinked
you could have chinked
she could have chinked
we could have chinked
you could have chinked
they could have chinked	I could have been chinking
you could have been chinking
she could have been chinking
we could have been chinking
you could have been chinking
they could have been chinking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not chink
you could not chink
she could not chink
we could not chink
you could not chink
they could not chink 	I could not be chinking
you could not be chinking
she could not be chinking
we could not be chinking
you could not be chinking
they could not be chinking	I could not have chinked
you could not have chinked
she could not have chinked
we could not have chinked
you could not have chinked
they could not have chinked	I could not have been chinking
you could not have been chinking
she could not have been chinking
we could not have been chinking
you could not have been chinking
they could not have been chinking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I chink?
could you chink?
could she chink?
could we chink?
could you chink?
could they chink? 	could I be chinking?
could you be chinking?
could she be chinking?
could we be chinking?
could you be chinking?
could they be chinking? 	could I have chinked?
could you have chinked?
could she have chinked?
could we have chinked?
could you have chinked?
could they have chinked? 	could I have been chinking?
could you have been chinking?
could she have been chinking?
could we have been chinking?
could you have been chinking?
could they have been chinking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not chink?
could you not chink?
could she not chink?
could we not chink?
could you not chink?
could they not chink? 	could I not be chinking?
could you not be chinking?
could she not be chinking?
could we not be chinking?
could you not be chinking?
could they not be chinking? 	could I not have chinked?
could you not have chinked?
could she not have chinked?
could we not have chinked?
could you not have chinked?
could they not have chinked? 	could I not have been chinking?
could you not have been chinking?
could she not have been chinking?
could we not have been chinking?
could you not have been chinking?
could they not have been chinking?